I'm all for good word of mouth, but if that word of mouth is, "go here, they do stuff for free" you may want to be careful.
Now, someone previously mentioned that if it's a quick fix do it for free. I can agree with that; but I'm going to trust the bike shop guy here in using his judgement in assessing the situation. The OP thought it was a simple quick fix, but he's not sure about how the 'hangy' thing is supposed to hang. I don't know what the hell he's talking about (probably the RD) but it may not have been such a quick fix.